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All Journal AGROLAND: The Agricultural Sciences Journal Soil REns Media Agribisnis AGRIC

Apong Sandrawati

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Author-ID : 2603366

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Social Sciences

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Hubungan Karakteristik Topografi dengan Sifat-Sifat Fisika Tanah Studi Kasus: Sub DAS Citarik, DAS Citarum Hulu Ade Setiawan; Mahfud Arifin; Rachmat Harryanto; Apong Sandrawati
Soilrens Vol 16, No 1 (2018)
Publisher : Fakultas Pertanian Universitas Padjadjaran

The proper understanding about spatial soil diversity is very important to simulate environmental model and to manage land resources in the landscape scale. Information of soil diversity is also noteworthy for environmental academics, forestry, civil engineering, and land use planner. Until now, most of the soil information are derived from conventional soil maps which are lack of detailed information. This condition can increase the uncertainty of model output and can also be an obstacle to the future development of spatial distribution model. According to this situation, the research was conducted in Sub Watershed of Cikeruh, Citarik, and Citarum Hulu. These areas are located in the 6o53’00”S - 6o53’15” S and 107o45’21”E - 107o45’55”E at 780-1800 m asl, The rainfall is classified as type C according to the Schmidt and Fergusson classification with mean rainfall around 1795.66 mm per year. The soils in the research areas are classified as Inceptisols. The research aims to analyze and elucidate the relation between topographic characteristics and soil physical properties. Some parameters studied in this research are elevation, aspect, plan curvature, profile curvature, topographic wetness index (TWI), topographic position index (TPI), and some soil physical properties, such as soil texture (clay, silt, and sand), soil organic carbon, soil bulk density, soil available water capacity, soil porosity and permeability. The results showed that all topographic parameters were related to one or some soil physical properties, except aspect and slope. Topographic variables that are frequently related to soil properties are TPI and TWI. Keywords: topographic characteristics, elevation, aspect, curvature, TWI, TPI, soil physical properties

Aplikasi Pupuk N, P, K dan Konsorsium Pupuk Hayati terhadap Retensi Hara, Serapan, dan Hasil Kedelai (Glycine max (L.)) pada Inceptisol Anni Yuniarti; Yuliati Machfud; Eso Solihin; Yogi Sudirman; Apong Sandrawati
Soilrens Vol 16, No 1 (2018)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Inceptisol is a widespread soil order with low fertility. Hence it is necessary to improve its quality status through the application of chemical and biological fertilizers. The main objecttive of this study is to determine the effect of NPK fertilizer and biofertlizer consortia (BC) combinations in Inceptisols towards N and P availability in soil and uptake by soybean (Glycine max L.). Experiments were carried out from April to August 2016 at Ciparanje Experimental Farm, Faculty of Agriculture, Universitas Padjadjaran, Jatinangor, Sumedang at the approximate altitude of 720 meters above the sea level. Randomized Block Design experimental design consisted of ten treatments and three replications was used in this study. Treatments consisted of control (no treatment), Recommended NPK dosage, 0 NPK + 1 BC, ¼ NPK + 1 BC, ½ NPK + 1 BC, ¾ NPK + 1 BC, 1 NPK + 1 BC, ¾ NPK + ¼ BC, ¾ NPK + ½ BC and also ¾ NPK + ¾ BC. Experimental results showed that the combination of NPK fertilizer and soybean-spesific biofertilizer consortium increased soil total phosphate content, nitrogen uptake by plant, and soyben yield significantly. Keywords: Biofertilizer, Soybean, total-N, Uptake of N, Inceptisols

Pendugaan Tingkat Produktivitas Lahan untuk Tanamanan Kelapa Sawit (Elaeis guineensis jacq) di Kabupaten Bangka dan Bangka Barat Apong Sandrawati; Aldi Putra Guntara
Soilrens Vol 14, No 2 (2016)
Publisher : Fakultas Pertanian Universitas Padjadjaran

The aimed of this research was to find out the level of agricultural land productivity with Storie Index Method and predict oil palm productivities based on land productivity. This research had been done since May until August 2014 at Bangka and West Bangka District. The landuse consisted with forest, crop fields, plantation, paddy soils and heath. The slopes consisted with vary on declivity; 0-8 %, 8-15 %, 25-40 % dan > 40 %, meanwhile the soil’s great group consisted with Haplohemists, Hapludox, Endoaquepts, Hydraquent, Udipsamments dan Dystrudepts. The district was on two type of rain fall, there was 2750 and 3000 mm/year. Analisys unit was land units that build from overlay those land variable. There was 24 land unit as research analisys unit. Data analisys used Storie Index Rating as parametrics approach. The result of this research showed that the level of productivity in Bangka and West Bangka District was excellent, good, moderate, and poor. The most extensive land quality is at grade 3 or medium quality is amounted to 394.668, 97 Ha or 70,49 % of total areas. Based on land productivity levels, productivity of oil palms counted that higher potential was in medium class with productivities range 11-18 tonnes/Ha/years. This area was speard 536.242,34 Ha or 95,78 % of total areas.Key words: Land productivity, storie index, oil palm productivities

Identifikasi Taksa Tanah di Situs Megalitik Gunung Padang Kabupaten Cianjur Mahfud Arifin; Ridha Hudaya; Apong Sandrawati; Muhammad Amir Solihin; Ganjar Herdiansyah
Soilrens Vol 14, No 2 (2016)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Mount Padang was famous megalith sites placed in Cianjur District. Mani discipline of science studied Mount Padang sites in order to find out the truth of histories. Based on geological studies, Mount Padang sites constructed by andesitic rock, this argument need more fact for get the real data. This research aimed to analysis pedological proses in Mount Padang sites. The result of study was soil classification which description by soil profile. Based on result of reseach the soil in Mount Padang formed in Qv rock formation. The result of soil profile analized with 2 meters depth, there was 10 layer formed e.g Ap, AB, Bw1, Bw2, BC1, BC2, CB1, CB2, C1, and C1. The genesis of Mount Padang soil was in viril levels, due to molic epipedon and cambic that found as below horizon diagnostics. Based on soil taxonomy, this pedon were classified as Typic Dystrudepts.Key words: megalith sites, andesitics rock, soil profile, viril, cambic

FARMER PERCEPTION TO ISPO IN OIL PALM PLANTATION IN WEST JAVA ernah ernah; Apong Sandrawati; Melania Fadillah; Dewi Rengganis; Sudarjat Sudarjat
AGROLAND: The Agricultural Sciences Journal Vol 6, No 1 (2019)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (62.395 KB)

Palm oil is one of the leading commodities in the world market that contributes to the Indonesian economy. In fulfilling market demand but environmental friendly, the Indonesian government issued a policy of sustainable standards known as the Indonesian Sustainable Palm Oil (ISPO) principle. This study aims to determine the farmers' perception of ISPO in the community of oil palm farmers in West Java. This study designed as qualitative research. The results show that not all standards were sustainable. ISO has been applied to oil palm plantations in West Java. For this reason, government efforts were needed to assist farmers in implementing the ISPO.

Pemetaan Tingkat Bahaya Erosi dengan Pemanfaatan Teknologi Drone di DTA Cipaheut Sub DAS Cikapundung Hulu Elita Cahyani; Abraham Suriadikusumah; Apong Sandrawati
Media Agribisnis Vol. 7 No. 1 (2023): Mei
Publisher : Program Studi Agribisnis, Fakultas Pertanian, Universitas Muhammadiyah Buton

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35326/agribisnis.v7i1.3232

Technology in the field of mapping is constantly evolving to provide convenience for human work. One of the innovations that are developing in todayâ€™s modern era is drone or Unmanned Aerial Vehicle (UAV). Erosion mapping and erosion measurements are carried out to determine the potential risk of erosion in certain areas. The erosion risk map shows the distribution of erosion hazard levels in an area. The objective of this research is to determine erosion prediction and erosion hazard levels spatially based on USLE (Universal Soil Loss Equation) method using drone. The used of UAV for collecting data to generate soil erosion risk map at detail scale based on USLE method is relatively infrequently done in Indonesia. The research was conducted in Cipaheut Watershed, Cikapundung Hulu Sub-watershed, Cimenyan, Cimenyan, Bandung Regency, West Java. The results of the study show that the role of drone is very helpful in mapping general conditions and land use spatially. In addition, drones are able to provide actual data sources to identify the physical factors needed in the USLE method of erosion calculations such as LS, C and P factors. Erosion prediction and erosion hazard levels can be calculated using data acquired from drones. There are 8 SPLs with a total land area of â€‹â€‹225.10 Ha. SPL 5 with the use of dry land and steep slope have the highest erosion prediction values â€‹â€‹of 703.1207 tons/ha/year and an erosion hazard index of 87.8901 tons/ha/year with a very high level of erosion hazard.

APLIKASI PUPUK SI ORGANIK DENGAN PUPUK N,P,K DALAM MENINGKATKAN P DAN SI TANAH PADA INCEPTISOL JATINANAGOR TERHADAP RESPON TANAMAN HANJELI (Coix lacryma Jobi L.) Eso Solihin; Anni Yuniarti; Apong Sandrawati; Zaenal Mutaqin
Agric Vol. 30 No. 1 (2018)
Publisher : Fakultas Pertanian dan Bisnis, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/agric.2018.v30.i1.p51-56

The objective of this research was to determine the effect of combinations of N, P, K and organic silica fertilizers In Soil P and Si and growth Of Job’s Tears (Coix Lacryma Jobi L.). This research began on May 2017 to October 2017. This research has been done in experimental of Faculty Agricultural, Padjadjaran University Jatinangor. The experiment was in Randomized Block Design (RCBD) consisting of ten treatments with three replications; (A) Control, (B) NPK standard, (C) NPK + ¼ Silica Emulsion, (D) NPK + ½ Silica Emulsion, (E) NPK + ¾ Silica Emulsion, (F) NPK + 1 Emulsion of Ash Silica , (G) NPK + ¼ Nano Colloidal Silica, (H) NPK + ½ Nano Colloidal Silica, (I) NPK + ¾ Nano Colloidal Silica, (J) NPK + 1 Nano Colloidal Silica. The results showed that there was effect of Si fertilizer on soil P and plant growth. Treatment (J) NPK + 1 Colloidal Nano Silica gives Hanjeli the highest yield 5 MST, 7 MST, 9 MST and 11 MST with plant height 3.58 cm, 10.58 cm, 17.17 cm and 18.00 cm

Co-Authors Abraham Suriadikusumah Ade Setiawan Aldi Putra Guntara Anni Yuniarti Dewi Rengganis Elita Cahyani Ernah Ernah Eso Solihin Ganjar Herdiansyah Mahfud Arifin Melania Fadillah Muhammad Amir Solihin Rachmat Harryanto Ridha Hudaya Sudarjat Sudarjat Yogi Sudirman Yuliati Machfud Zaenal Mutaqin

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